The MTi-G-700 and MTi-G-710 require an antenna. Next to the standard antenna that Xsens delivers with the Development Kit (ANT-P, see shop.xsens.com/.../ant-p), Xsens has tested other antennas as well. Depending on the antenna and the version of the MTi-G (700 or 710), the user has access to the various GNSS systems.
|PCTEL 3910D, 3 meter (no longer sold by Xsens, was default antenna for MTi-G-700)||GPS||GPS|
|ANT-P: PCTEL 8117D, 3 meter, no magnets (Dev Kit antenna). Same footprint as 3910D||GPS||GPS/GLONASS|
|ANT-MULTI: Tallysman Wireless 4721, 5 meter||GPS||GPS/GLONASS/BeiDou|
|Tallysman Wireless 2710||GPS||GPS/GLONASS/BeiDou|
Both Tallysman and PCTEL have many configurations (with/without magnets, cable lengths, connectors), so contact them for more information. Most of their antennas are also available with worldwide distributors as Farnell, Mouser and Digi-Key.
Using other antennas
The antenna must be connected to the SMA connector on the front panel of the MTi-G-700/710 or the u.FL connector on the OEM-board.
When using another GNSS antenna than the one supplied as a part of the MTi-G-700/710 Development Kit, one has to consider the antenna gain of the active antenna. It is recommended to only use active antennas with gain between 15-50 dB. The voltage supplied by the MTi-G to the SMA or u.fl connector (OEM) is 3.2 to 3.3V. The maximum current must be under 9mA @ 3.3V.
Patch antennas are not suitable for hand-held devices, because of the de-tuning effect of the hand/body. The hand/body will dielectrically load the patch antenna, which will de-tune the resonant frequency of the patch. For this purpose a helix antenna is recommended.
In contrast to helix antennas, patch antennas require a ground plane for operation. Helix antennas can be designed for use with or without a ground plane.